CN106571801A - Spark gap and photoconductive combined switch - Google Patents
Spark gap and photoconductive combined switch Download PDFInfo
- Publication number
- CN106571801A CN106571801A CN201610960200.0A CN201610960200A CN106571801A CN 106571801 A CN106571801 A CN 106571801A CN 201610960200 A CN201610960200 A CN 201610960200A CN 106571801 A CN106571801 A CN 106571801A
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- Prior art keywords
- switch
- photoconductive
- load
- electrode
- spark gap
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
- H03K17/78—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used using opto-electronic devices, i.e. light-emitting and photoelectric devices electrically- or optically-coupled
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K2217/00—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00
- H03K2217/94—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated
- H03K2217/941—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated using an optical detector
- H03K2217/94102—Indexing scheme related to electronic switching or gating, i.e. not by contact-making or -breaking covered by H03K17/00 characterised by the way in which the control signal is generated using an optical detector characterised by the type of activation
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention discloses a spark gap and photoconductive combined switch, which comprises a spark gap switch and a photoconductive switch in insulated package. The spark gap switch comprises two spark gap switch electrodes. The two spark gap switch electrodes are arranged in a reflection cup; one spark gap switch electrode is connected with a constant current source and a pulse capacitor, wherein the constant current source is connected with the pulse capacitor; and the other spark gap switch electrode is connected with a first load and a resistance voltage divider. The photoconductive switch comprises a base plate. The base plate is provided with two photoconductive switch electrodes, wherein one photoconductive switch electrode is connected with a power supply and a capacitor, and the other photoconductive switch electrode is connected with a coaxial transmission line, an attenuator and a second oscilloscope in sequence. The spark gap and photoconductive combined switch proposes and realizes that spark discharge radiation light pulse is utilized as a trigger light source instead of a conventional pulse laser, so that the trigger light source is allowed to not use high-cost of laser equipment any more, and use cost and difficulty of the photoconductive switch are reduced.
Description
Technical field
The invention belongs to electrical engineering equipment technical field, is related to a kind of gap with photoconductive cubicle switch.
Background technology
Photoconductivity switching is a kind of change using optoelectronic semiconductor resistivity of media realizing the switch for switching off and on
Technology, effect of the laser to semi-conducting material is the resistivity for changing material.Be increasingly becoming at present be operated in it is superpower ultrafast
The important switching device in laser science research field and pulse power field.Photoconductivity switching without triggering with rocking, and switch is fast
Degree is fast, and parasitic capacitance, inductance are little, high repetition frequency, the characteristics of simple structure, especially it is high pressure resistant, undertake high power capacity side
There is superior performance in face.Photoconductivity switching has two kinds of mode of operations：Linear model and nonlinear model.For the light of linear model
Conductance switch, because laser instrument volume is larger, is unfavorable for realizing the compact design of whole switch, this application to switch is produced
Very big obstruction.1987, the G.M.Loubriel in Holy Land Asia National Laboratory (SNL) et al. observed GaAs (GaAs)
There is non-linear process planning in photoconductivity switching.When GaAs photoconductivity switchings are worked under nonlinear model, switch internal is deposited
In the avalanche multiplication effect of carrier, ultrafast high voltage heavy current electric pulse can be produced with low light level triggering, it is possible to half
Triggering light source of the conductor pulse laser as photoconductivity switching.So far, under nonlinear model photoconductivity switching maximum
Voltage has reached hundred kV magnitudes, and maximum switching current has reached several kA.In terms of triggering light, extra pulse laser is used at present
The wavelength of device has respectively：532nm、780nm、876nm、900nm、1064nm.So far, the triggering light source of photoconductivity switching is all
It is pulse laser.Laser equipment volume is generally bigger than normal, is unfavorable for compact design, is unfavorable for device miniaturization, and can reach
To the laser equipment high expensive of use requirement, for the expansion of the prospect of the application of photoconductivity switching defines no small resistance.
The content of the invention
Object of the present invention is to provide a kind of gap and photoconductive cubicle switch, solve existing photoconduction and open
The problem of the triggering mode high cost of pass.
The technical solution adopted in the present invention is, a kind of gap and photoconductive cubicle switch, including the fire being oppositely arranged
Flower gap switchs and carries out the photoconductivity switching of insulation-encapsulated.
Arrester switch includes two arrester switch electrodes being oppositely arranged, and two arrester switch electrodes are located at back-off
Reflector in, the rim of a cup of reflector is connected with optical glass, and on an arrester switch electrode constant-current source and pulse are connected with
Capacitor, constant-current source is connected with impulse capacitor, and on another arrester switch electrode the first load and electric resistance partial pressure are connected with
Device, impulse capacitor and resitstance voltage divider are connected with the first load, and resitstance voltage divider is connected with the first oscillograph；
Photoconductivity switching includes base plate, and base plate is oppositely arranged with optical glass, and two photoconductions are relatively set with base plate
Switch electrode, on a photoconductivity switching electrode power supply and electric capacity are connected with, and first resistor are connected between power supply and electric capacity, separately
Coaxial transmission line, attenuator and the second oscillograph being connected with turn on one photoconductivity switching electrode, the second oscillograph and electricity
Hold connection.
Of the invention the characteristics of, also resides in,
Constant-current source is grounded, power ground.
Photoconductivity switching carries out insulation-encapsulated, and base plate is made up of GaAs semi-conducting materials.
Optical glass is optical quartz glass.
Power supply adopts 0-10000V adjustable high voltage power supplies.
Electric capacity is in series by the small capacitances of 12 0.01 μ F.
The power attenuation amount of attenuator is 60dB.
The second load and the 3rd load are connected between constant-current source and impulse capacitor.
Resitstance voltage divider include be connected with each other the 4th load and the 5th load, the first oscillograph be connected to the 4th load and
Between 5th load, the first load is second resistance, and the second load is diode, and the 3rd load is current-limiting resistance, and the 4th loads
For 3rd resistor, the 5th load is the 4th resistance.
The section of reflector is parabola shaped, and the gap between two arrester switch electrodes is parabola shaped anti-with section
The focus of light cup is relative.
The invention has the beneficial effects as follows：A kind of gap and photoconductive cubicle switch, propose and realize to use spark discharge spoke
Light pulse is penetrated as triggering light source, traditional pulse laser is substituted.Triggering light source is set not use the laser equipment of high cost,
The practical cost and difficulty of photoconductivity switching are reduced, makes switch have more ease for use, while the maintenance difficulties of equipment compare source, laser apparatus
It is standby much lower.Reflector causes the utilization ratio of light source higher, and the present invention is practical, is conducive to the practicality of photoconductivity switching
Change.
Description of the drawings
Fig. 1 is the structural representation of a kind of gap of the invention and photoconductive cubicle switch；
Fig. 2 is the test result figure of a kind of gap of the invention and photoconductive cubicle switch.
In figure：1. arrester switch electrode, 2. reflector, 3. optical glass, 4. constant-current source, 5. impulse capacitor, 6. electric
Resistance potentiometer, 7. the first load, 8. base plate, 9. photoconductivity switching electrode, 10. power supply, 11. electric capacity, 12. first resistors, 13. the
One oscillograph, 14. second oscillographs, 15. attenuators, 16. coaxial transmission lines, 17. second loads, 18. the 3rd loads, 19. the
Four loads, 20. the 5th loads.
Specific embodiment
With reference to the accompanying drawings and detailed description the present invention is described in detail.
The invention provides a kind of gap and photoconductive cubicle switch, as shown in figure 1, including the gap being oppositely arranged
Switch and photoconductivity switching,
Arrester switch includes two arrester switch electrodes 1 being oppositely arranged, the diameter of two arrester switch electrodes 1
10mm is, two arrester switch electrodes 1 are copper electrode and Cross section polishing, and two edges of arrester switch electrode 1 add
Work is the fillet of radius 2mm, and between two arrester switch electrodes 1 12mm gaps are left；
Two arrester switch electrodes 1 are located in the reflector 2 of back-off, and reflector 2 is the metal (aluminum of a diameter of 3-5cm
Or silver-plated) reflector, the section of reflector 2 is parabola shaped, and the gap between two arrester switch electrodes 1 is throwing with section
The focus of the linear reflector 2 of thing is relative；
The rim of a cup of reflector 2 is connected with optical glass 3, and on an arrester switch electrode 1 constant-current source 4 and pulse are connected with
Capacitor 5, constant-current source 4 is connected with impulse capacitor 5, and the second load 17 and are connected between constant-current source 4 and impulse capacitor 5
Three loads 18, constant-current source 4 is grounded, and the first load 7 and resitstance voltage divider 6, pulse are connected with another arrester switch electrode 1
Capacitor 5 and resitstance voltage divider 6 are connected with the first load 7, and resitstance voltage divider 6 is connected with the first oscillograph 13, electric resistance partial pressure
Device 6 includes the 4th load 19 being connected with each other and the 5th load 20, and it is negative that the first oscillograph 13 is connected to the 4th load 19 and the 5th
Carry between 20；
First load 7 is second resistance, and the second load 17 is diode, and the 3rd load 18 is current-limiting resistance, and the 4th loads
19 is 3rd resistor, and the 5th load 20 is the 4th resistance；
In order to improve the voltage endurance capability of switch, using photoconductivity switching, and photoconductivity switching is carried out into insulation-encapsulated, will
Photoconductivity switching is fixed in shielding can；
Photoconductivity switching includes the base plate 8 by made by GaAs semi-conducting materials, and base plate 8 is relative with optical quartz glass 3 to be set
Put, the distance between base plate 8 and optical glass 3 are 5mm, optical glass 3 is optical quartz glass, is relatively set with base plate 8
Two photoconductivity switching electrodes 9, the gap between two photoconductivity switching electrodes 9 is 14mm, on a photoconductivity switching electrode 9
Power supply 10 and electric capacity 11 are connected with, first resistor 12 is connected between power supply 10 and electric capacity 11, another photoconductivity switching electrode 9
On be connected with coaxial transmission line 16, the oscillograph 14 of attenuator 15 and second in turn, the second oscillograph 14 is connected with electric capacity 11, power supply
10 ground connection；
Power supply 10 adopts 0-10000V adjustable high voltage power supplies, and first resistor 12 is 10M Ω, and electric capacity 11 is by 12 0.01 μ F's
Small capacitances are in series；
The power attenuation amount of attenuator 15 is 60dB.
A kind of gap of the present invention is with the operation principle of photoconduction cubicle switch：Power supply 10 is first turned on, electric capacity 11 is opened
Begin to charge, treat that electric capacity 11 charges and finish, then impulse capacitor 5 is charged by constant-current source 4, until two arrester switch electricity
Pole 1 turns on, and 5 pairs first loads 7 of impulse capacitor are discharged, and the magnitude of voltage on 7 are loaded by the measurement of resitstance voltage divider 6 first, just
The self-breakdown voltage of arrester switch can be measured, by the recording voltage current waveform of the first oscillograph 13, is easy to data analysiss；
There is strong spark discharge between arrester switch conducting two arrester switch electrodes 1 of moment, thus process
The radiant light of generation is converged by reflector 2, forms less parallel light irradiation photoconductivity switching (triggering light irradiation), reflector
2 parabola concentrating light principles make the utilization ratio of light source higher converging light source, and now electric capacity 11 has been electrically charged and has finished, light
The toggled light irradiation of conductance switch, first resistor 12 declines rapidly arrester switch conducting, just may be used by the second oscillograph 14
Voltage current waveform in writing circuit, and then analyze triggering effect.
The experiment test carried out using Fig. 1 structures, the capacitance of electric capacity 11 is 4nF, and the power attenuation amount of attenuator 15 is
60dB, is respectively under 4.0kV, 4.5kV and 5.0kV in the bias voltage of power supply 10, two arrester switch of arrester switch
The electro-optical pulse triggering photoconductivity switching that electrode 1 is released, obtains output electric pulse waveform, such as Fig. 2 institutes on the second oscillograph 14
Show, the equivalent resistance of the second oscillograph 14 is 50 Ω, so the electricity exported under the different biass of 4.0kV, 4.5kV and 5.0kV
Stream peak value is：35.0A, 42.8A and 50.4A, this result nearly three quantity bigger than the peak point current under linear operation mode
Level, thus deducibility invention achieves the effect of high multiplication.
A kind of gap of the present invention and photoconductive cubicle switch, propose and realize to radiate light pulse conduct with spark discharge
Triggering light source, substitutes traditional pulse laser.Make triggering light source not use the laser equipment of high cost, reduce photoconduction
The practical cost and difficulty of switch, makes switch have more ease for use, while the maintenance difficulties of equipment are more much lower than laser equipment.It is reflective
Cup 2 causes the utilization ratio of light source higher, and the present invention is practical, is conducive to the practical of photoconductivity switching.
Claims (10)
1. a kind of gap and photoconductive cubicle switch, it is characterised in that including the arrester switch being oppositely arranged and carry out absolutely
The photoconductivity switching of edge encapsulation,
The arrester switch includes two arrester switch electrodes (1) being oppositely arranged, two arrester switch electrode (1) positions
In the reflector (2) of back-off, the rim of a cup of reflector (2) is connected with optical glass (3), on an arrester switch electrode (1)
Constant-current source (4) and impulse capacitor (5) are connected with, constant-current source (4) is connected with impulse capacitor (5), another arrester switch
It is connected with the first load (7) and resitstance voltage divider (6) on electrode (1), impulse capacitor (5) and resitstance voltage divider (6) are with
One load (7) connection, resitstance voltage divider (6) is connected with the first oscillograph (13)；
The photoconductivity switching includes base plate (8), and base plate (8) is oppositely arranged with optical glass (3), and base plate is oppositely arranged on (8)
There are two photoconductivity switching electrodes (9), power supply (10) and electric capacity (11), power supply are connected with a photoconductivity switching electrode (9)
(10) first resistor (12) is connected with and electric capacity (11) between, what is be connected with turn on another photoconductivity switching electrode (9) is same
Axle transmission line (16), attenuator (15) and the second oscillograph (14), the second oscillograph (14) is connected with electric capacity (11).
2. a kind of gap according to claim 1 and photoconductive cubicle switch, it is characterised in that：The constant-current source (4)
Ground connection, power supply (10) ground connection.
3. a kind of gap according to claim 1 and photoconductive cubicle switch, it is characterised in that：The photoconductivity switching
Insulation-encapsulated is carried out, base plate (8) is made up of GaAs semi-conducting materials.
4. a kind of gap according to claim 1 and photoconductive cubicle switch, it is characterised in that：The optical glass
(3) it is optical quartz glass.
5. a kind of gap according to claim 1 and photoconductive cubicle switch, it is characterised in that：The power supply (10) is adopted
Use 0-10000V adjustable high voltage power supplies.
6. a kind of gap according to claim 1 and photoconductive cubicle switch, it is characterised in that：The electric capacity (11) by
The small capacitances of 12 0.01 μ F are in series.
7. a kind of gap according to claim 1 and photoconductive cubicle switch, it is characterised in that：The attenuator (15)
Power attenuation amount be 60dB.
8. a kind of gap according to any one of claim 1-7 and photoconductive cubicle switch, it is characterised in that：The perseverance
The second load (17) and the 3rd load (18) are connected between stream source (4) and impulse capacitor (5).
9. a kind of gap according to claim 8 and photoconductive cubicle switch, it is characterised in that：The resitstance voltage divider
(6) including the 4th load (19) and the 5th load (20) being connected with each other, the first oscillograph (13) is connected to the 4th load (19)
And the 5th between load (20), the first load (7) is second resistance, and the second load (17) is diode, and the 3rd load (18) is
Current-limiting resistance, the 4th load (19) is 3rd resistor, and the 5th load (20) is the 4th resistance.
10. a kind of gap according to claim 9 and photoconductive cubicle switch, it is characterised in that：The reflector (2)
Section for parabola shaped, the gap between two arrester switch electrodes (1) and section for parabola shaped reflector (2) Jiao
Point is relative.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610960200.0A CN106571801B (en) | 2016-10-28 | 2016-10-28 | A kind of gap and photoconductive stacked switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610960200.0A CN106571801B (en) | 2016-10-28 | 2016-10-28 | A kind of gap and photoconductive stacked switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106571801A true CN106571801A (en) | 2017-04-19 |
| CN106571801B CN106571801B (en) | 2019-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610960200.0A Active CN106571801B (en) | 2016-10-28 | 2016-10-28 | A kind of gap and photoconductive stacked switch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108390257A (en) * | 2018-05-24 | 2018-08-10 | 西北核技术研究所 | A kind of light pulse triggering gas switch that optical fiber introduces |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0463800A3 (en) * | 1990-06-29 | 1993-06-09 | Cooper Industries Inc. | Direct current ignition system |
| CN101795127A (en) * | 2010-02-04 | 2010-08-04 | 西安理工大学 | High-voltage square-wave pulse generator and method for generating high-voltage square-wave pulse |
-
2016
- 2016-10-28 CN CN201610960200.0A patent/CN106571801B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0463800A3 (en) * | 1990-06-29 | 1993-06-09 | Cooper Industries Inc. | Direct current ignition system |
| CN101795127A (en) * | 2010-02-04 | 2010-08-04 | 西安理工大学 | High-voltage square-wave pulse generator and method for generating high-voltage square-wave pulse |
Non-Patent Citations (3)
| Title |
|---|
| G.J.H. BRUSSAARD等: "Photoconductive Operation of a Laser Triggered Spark Gap", 《IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION》 * |
| WEI SHI等: "A Novel Application of GaAs Photoconductive Semiconductor Switch in Triggering Spark Gap", 《IEEE TRANSACTIONS ON PLASMA SCIENCE》 * |
| 田立强: "高功率GaAs光电导开关的特性与击穿机理研究", 《中国博士学位论文全文数据库（信息科技辑）》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108390257A (en) * | 2018-05-24 | 2018-08-10 | 西北核技术研究所 | A kind of light pulse triggering gas switch that optical fiber introduces |
| CN108390257B (en) * | 2018-05-24 | 2023-12-15 | 西北核技术研究所 | Optical pulse triggering gas switch introduced by optical fiber |
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| Publication number | Publication date |
|---|---|
| CN106571801B (en) | 2019-09-27 |
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| CB03 | Change of inventor or designer information |
Inventor after: Shi Wei Inventor after: Wu Meilin Inventor after: Leng Zhiwu Inventor after: Ma Cheng Inventor after: Hou Lei Inventor after: Zhang Qin Inventor before: Shi Wei Inventor before: Wu Meilin Inventor before: Leng Zhiwu Inventor before: Ma Cheng Inventor before: Xu Ming Inventor before: Hou Lei Inventor before: Zhang Qin |
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Application publication date: 20170419 Assignee: Shi Wei Assignor: XI'AN University OF TECHNOLOGY Contract record no.: X2022980005926 Denomination of invention: A combination switch of spark gap and photoconductivity Granted publication date: 20190927 License type: Exclusive License Record date: 20220519 |